You can just buy a SD300 cable and cut it, and use the two ends as "new" connectors for you old R610
I just did this, and it works perfect. The new Shimano version has a special connector but is is just a SD300 with an extra flange to prevent people to plug it in the wrong hole. The SD300 connector fits fine.
DIY Di2 sprint shifters
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Thanks for the confirmation, which di2 shifter do you have?LAN wrote: ↑Tue Sep 20, 2022 1:01 pmYou can just buy a SD300 cable and cut it, and use the two ends as "new" connectors for you old R610
I just did this, and it works perfect. The new Shimano version has a special connector but is is just a SD300 with an extra flange to prevent people to plug it in the wrong hole. The SD300 connector fits fine.
I have two bikes both with ST-R9270 shifters
On bike nr. 1 I have spliced two old sets of SW-R610 with a SD300 port. So both climb and sprint button per side in one port.
On bike nr. 2 I have spliced an old set of SW-R610 and an old set of Cateye button with a SD300 port.
Both setup works perfect. As long as you use the lowest slot on the shifter, the signal i just a dumb on/off switch.
On bike nr. 1 I have spliced two old sets of SW-R610 with a SD300 port. So both climb and sprint button per side in one port.
On bike nr. 2 I have spliced an old set of SW-R610 and an old set of Cateye button with a SD300 port.
Both setup works perfect. As long as you use the lowest slot on the shifter, the signal i just a dumb on/off switch.
